Railway signaling apparatus.



G.DALEN.

RAILWAY SIGNALING APPARATUS.

AYPLIOATION FILED OUT. 6, 1913.

1,099,1 1 8, Patented June 2, 1914.

! l WITNESSES dosw y gg ie zv 3% ATTORNEY llhll f lhl GUSTAF DALEN, OFSTOCKHOLl/I, SWEDEN.

RAILWAY SIGNALING APPARATUS.

neaaiie.

Specification of Letters Patent.

Application filed October 6, 191.3.

Patented June 1?, 1914. Serial No. $493,656.

1 '0 all whom it may concern:

Be it known that l, G'Us'rAr DALiiN, a subject of the King of Sweden,and residing at @tadsgitrden 1S, Stockholm, Sweden, have invented acertain new and useful Improved tailway Signaling Apparatus, of whichthe following is a specification.

The present invention refers to improvements in railway signalingapparatus, in which in a certain position of a movable signaling devicesuch as a semaphore arm, by means of an automatically working gas flashlight apparatus, flash light signals are established, said apparatusbeing provided with a valve which at certain intervals of timeautomatically supplies gas through a gas conduit to a burner.

The invention has for its object to establish a steady light in saidburner in one po sition of the movable signaling device, while inanother position of said movable signah ing device a flash light isestablished. or this purpose a by-pass conduit is arranged around theflash light apparatus, and in the said lay-pass conduit a cutting offdevice is inserted, actuated by the movable signaling device in such amanner as to be opened in one position of said signaling device, sup.-plying gas to the burner of the flash light apparatus directly from themain gas conduit so as to establish a steady light, whereas the cuttingcit device is closed in another position of the movable signalingdevice, so that the gas must pass through the flash light apparatus tothe burner, whereby flash light is obtained.

The accompanying drawing illustrates a constructional form of theinvention scheinatically.

1 indicates the automatically working flash light apparatus, which maybe of any suitable or known construction, 2 the burner conduit of thesame and 3 the burner.

t indicates the supply conduit, which i s provided with a throttlingdevice 5 and is divided into two branches and T, of which 6 conducts gasto the flash light apparatus 1 after having passed a throttling device8, whereas the conduit 7 constitutes a loy-pass conduit, connected withthe burner conduit 2 and provided with a shutting off device 9, which inany suitable manner is actuated by the semaphore arm 11, say by means ofthe rod 10, so that the shutting oil device 9 is opened in one positionof the semaphore arm, but is closed at another position of the same.

12 indicates a pilot flame conduit, extending from the main gas conduitl and pro vided with a throttling organ 14 and opening in the proximityof the burner in the usual manner.

In the closed position 'of the cutting off device 9 the gas passes inthe usual manner from. the main conduit 4L through the conduit 6 to theflash light apparatus 1, in which an automatically working valve in aknown manner at certain intervals of time supplies gas to the burnerconduit 2, so that flashes are established. The throttling device 5 isadjusted in such a manner, that it allows just as much gas to pass, asis necessary to get a full flame burning with steady light in the burner23, whereas the throttling device 8 is adjusted in such a manner as tothrottle the gas flowing through the conduit 6, but admitting thenecessary amount of gas to pass to the flash light apparatus. When byshifting the position of the somaphore arm 11 the shuttii'lg oit' device9 is opened, the pressure falls in the conduits 6 and 12, and flows tothe burner 3 directly through the conduit 7, whereby the flash lightapparatus is put out of function on account of the counter pressureprevailing in the burner conduit. When the semaphore arm 11 again isshifted, the cutting ofl device 9 is closed, whereby the pressure in theconduit 6 again is raised and the flash light apparatus is again put infunction.

Having now described my invention, what I claim. new and desire tosecure by Let ters Patent is 1. In a railway signaling apparatus, a gasburner, a movable signaling device, and means for causing a steady lightto burn in the burner in one position of said signaling device, andflash light to burn in said burner in another position of the same.

2. In railway signaling apparatus, a movable signaling device, anautomatically operating gas flash light apparatus, a gas supply conduitto the same, a burner conduit connected with said gas flash lightapparatus, a by-pass conduit, connecting said supply conduit with saidburner conduit, and a shutting oil device in said bypass conduitoperatively connected with said movable signaling device.

3. In railway signaling apparatus, a movable signaling device, anautomatically operating gas flash light apparatus, a gas supply conduitto the same, a throttling device inserted in said gas supply conduit, aburner conduit connected with said gas flash light apparatus, a by-passconduit, connecting said supply conduit with said burner conduit, and ashutting oil device in said bypass conduit, operatively connected withsaid movable signaling device.

4. In railway signaling apparatus, a movable signaling device, anautomatically operating gas flash light apparatus, a gas supply conduitto the same, two throttling devices in succession in said gas supplycon- Copies of this patent may be obtained for five cents each, byaddressing the Commissioner'of"Patents,

duit, a burner conduit connected with the gas flash light apparatus, aby-pass conduit connecting the burner conduit with the gas supplyconduit at a point between the throttling devices, and a cutting oiidevice in said 20 GUSTAF DALEN.

lVitnesses lVALDEMAR BOWMAN, 1 T. NORDGREN.

Washington, D. C.

